package ten;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;

public class CollectionDemo {
    public static void main(String[] args) {
        Collection c = new ArrayList();
        c.add(new Point(1,2));
        c.add(new Point(3,4));
        c.add(new Point(5,6));
        c.add(new Point(7,8));
        c.add(new Point(9,0));
        c.add(new Point(1,2));
        System.out.println(c);
        Point p = new Point(1,2);
        boolean contains = c.contains(p);
        System.out.println("是否包含:"+contains);
        c.remove(p);
        System.out.println(c);
        Object[] s = c.toArray();
        System.out.println(Arrays.toString(s));


    }

}
